<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="test"></div>
    <script src="./js/react.development.js"></script>
    <script src="./js/react-dom.development.js"></script>
    <script src="./js/babel.min.js"></script>
    <script type="text/babel">
        class Demo extends React.Component {
            butClick = ()=>{
                const {input1} = this
                console.log(input1.value)
            }
            butClick2 = ()=>{
                const {input2} = thisW
                console.log(input2.value)
            }
            render() {
                return (
                    <div>
                        <input ref={c=>this.input1 = c} type="text" placeholder="点击按钮提示数据"/>
                        <button onClick={this.butClick}>点击按钮提示数据</button>
                        <input ref={c=>this.input2 = c} onBlur={this.butClick2} type="text" placeholder="失去焦点提示数据"/>    
                    </div>
                )
            }
        }
        ReactDOM.render(<Demo/>,document.getElementById("test"))
    </script>
</body>
</html>